21911830

素因数分解:

$2^1\times 5^1\times {\mathrm{113}}^1\times {\mathrm{19391}}^1$

素因数の和:19511

約数の個数: 16

約数和(自身を含む): 39792384

約数和(自身を除く): 17880554

約数列:

[1, 2, 5, 10, 113, 226, 565, 1130, 19391, 38782, 96955, 193910, 2191183, 4382366, 10955915, 21911830]

約数ペア:

[(1, 21911830), (2, 10955915), (5, 4382366), (10, 2191183), (113, 193910), (226, 96955), (565, 38782), (1130, 19391)]